Switch to a 4ms/1s timer

 Bug: 6523124
 Bug: 6523033
 Use a 4ms timer for foreground tabs, and a 1s timer
 for background tabs

Change-Id: Iea061d63adf82f6e17dd2d47d382fcdfc588b7d3

1 files changed, 9 insertions, 0 deletions

diff --git a/Source/WebKit/android/jni/WebViewCore.cpp b/Source/WebKit/android/jni/WebViewCore.cpp
index 73abb07..8838f14 100644
--- a/Source/WebKit/android/jni/WebViewCore.cpp
+++ b/Source/WebKit/android/jni/WebViewCore.cpp
@@ -171,6 +171,9 @@ FILE* gRenderTreeFile = 0;
 #include "RenderLayerCompositor.h"
 #endif
 
+#define FOREGROUND_TIMER_INTERVAL 0.004 // 4ms
+#define BACKGROUND_TIMER_INTERVAL 1.0 // 1s
+
 // How many ms to wait for the scroll to "settle" before we will consider doing
 // prerenders
 #define PRERENDER_AFTER_SCROLL_DELAY 750
@@ -549,6 +552,8 @@ WebViewCore::WebViewCore(JNIEnv* env, jobject javaWebViewCore, WebCore::Frame* m
 
     // HTML5 History API
     RuntimeEnabledFeatures::setPushStateEnabled(true);
+    if (m_mainFrame)
+        m_mainFrame->settings()->setMinDOMTimerInterval(FOREGROUND_TIMER_INTERVAL);
 }
 
 WebViewCore::~WebViewCore()
@@ -4788,6 +4793,8 @@ static void Pause(JNIEnv* env, jobject obj, jint nativeClass)
         if (geolocation)
             geolocation->suspend();
     }
+    if (mainFrame)
+        mainFrame->settings()->setMinDOMTimerInterval(BACKGROUND_TIMER_INTERVAL);
 
     viewImpl->deviceMotionAndOrientationManager()->maybeSuspendClients();
 
@@ -4808,6 +4815,8 @@ static void Resume(JNIEnv* env, jobject obj, jint nativeClass)
         if (geolocation)
             geolocation->resume();
     }
+    if (mainFrame)
+        mainFrame->settings()->setMinDOMTimerInterval(FOREGROUND_TIMER_INTERVAL);
 
     viewImpl->deviceMotionAndOrientationManager()->maybeResumeClients();